Re: Quickie Q1 registered as an E-LSA?

Patrick Panzera <panzera@...>

It is my understanding that the FAA is not likely to approve a LSA
certificate unless manufacture data indicates all of the parameters can be
met. In the case of the Quickie, the FAA is unlikely to approve Light
even if a builder modifies the Quickie in some manor to reduce the stall

Before this gets too far, I have to gig this on a technicality.

First, the only aircraft that can be registered as an E-LSA are those kitted
as such, by a manufacturer of a certified S-LSA. In other words, since
Zenith makes and sells an S-LSA CH601, they can if they chose, offer an
E-LSA kit of that same plane (verbatim) and it has to be built 100%
according to plans and specs, with absolutely NO deviations, save maybe

Exception: If you own an S-LSA, YOU may downgrade it to an E-LSA.

That's currently the ONLY way to register any aircraft as an E-LSA.

Second, the Quickie line of aircraft, in its current state of ownership,
will always be just an experimental.

If you, as a Sport Pilot, wish to exercise your privileges to fly under your
SP license, you have to do so in an LSA qualifying aircraft, be it a
certified production S-LSA, an E-LSA, an Experimental, or a Certified GA
aircraft. It's up to you to know if the plan qualifies or not.

Now back to the question at hand. There are three LSA performance

1. Maximum takeoff weight - 1320 lbs
2. Maximum speeds - 120 kts at maximum power (138 MPH) calibrated airspeed
3. Max stall speed - 45 kts (51.8 MPH) VS1* calibrated airspeed

*VS1 = the stalling speed or the minimum steady flight speed obtained in a
specific configuration.

Numbers one and two, no problem. If #2 IS a problem, re-pitch the prop until
it's not. Accept the vertical climb capability in trade.

Number three could become a problem, but VG's and a very low weight could
solve it.

Here's the "loophole" if there is one.

YOU are the builder and the author of the POH and the placards.

YOUR plane is unproven until you fly it and find or define the flight
envelope, including stall. Q's don't "stall" in the traditional manner so we
have to look further at the definition: "or the minimum steady flight speed
obtained". What is considered "steady flight"? I'm not sure but a lot of
definitions use the term, "minimum controllable speed". Can you still
"control" your Q at max pitch-buck? (Make controllable turns and keep a
heading? Maintain a constant airspeed within a reasonable range?) If so, is
that speed below 45 kts? Then placard that as the bottom of the green arc
and consider your plane LSA-qualified.


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